The Ameritron ALS-500RC is a remote control head for the Ameritron ALS-500M amplifier with serial number 13049 and above. The ALS-500RC allows the amplifier to be located away from the operating station and still have access of the amplifiers front panel controls. The ALS-500RC operates the amplifiers power switch and frequency select switch. The ALS-500RC has LEDs to indicate power, transmit and overload. It also has a current meter.